Show commands: Magma / Pari/GP / SageMath

Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [80,5,Mod(17,80)] mf = mfinit([N,k,chi],0) lf = mfeigenbasis(mf)
 
Copy content magma:// Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code chi := DirichletCharacter("80.17"); S:= CuspForms(chi, 5); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(80, base_ring=CyclotomicField(4)) chi = DirichletCharacter(H, H._module([0, 0, 1])) N = Newforms(chi, 5, names="a")
 
Level: \( N \) \(=\) \( 80 = 2^{4} \cdot 5 \)
Weight: \( k \) \(=\) \( 5 \)
Character orbit: \([\chi]\) \(=\) 80.p (of order \(4\), degree \(2\), not minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [4,0,12] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(3)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(8.26959704671\)
Analytic rank: \(0\)
Dimension: \(4\)
Relative dimension: \(2\) over \(\Q(i)\)
Coefficient field: \(\Q(i, \sqrt{29})\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 15x^{2} + 49 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2^{4}\cdot 5 \)
Twist minimal: no (minimal twist has level 40)
Sato-Tate group: $\mathrm{SU}(2)[C_{4}]$

Embedding invariants

Embedding label 17.1
Root \(-3.19258i\) of defining polynomial
Character \(\chi\) \(=\) 80.17
Dual form 80.5.p.f.33.1

$q$-expansion

Copy content comment:q-expansion
 
Copy content sage:f.q_expansion() # note that sage often uses an isomorphic number field
 
Copy content gp:mfcoefs(f, 20)
 
\(f(q)\) \(=\) \(q+(3.00000 - 3.00000i) q^{3} +(-24.5407 + 4.77033i) q^{5} +(42.8516 + 42.8516i) q^{7} +63.0000i q^{9} +181.703 q^{11} +(25.1484 - 25.1484i) q^{13} +(-59.3110 + 87.9330i) q^{15} +(160.407 + 160.407i) q^{17} -80.2967i q^{19} +257.110 q^{21} +(-324.555 + 324.555i) q^{23} +(579.488 - 234.134i) q^{25} +(432.000 + 432.000i) q^{27} +1374.52i q^{29} +151.484 q^{31} +(545.110 - 545.110i) q^{33} +(-1256.02 - 847.191i) q^{35} +(-1428.48 - 1428.48i) q^{37} -150.890i q^{39} -3016.66 q^{41} +(1615.74 - 1615.74i) q^{43} +(-300.531 - 1546.06i) q^{45} +(397.522 + 397.522i) q^{47} +1271.53i q^{49} +962.440 q^{51} +(923.225 - 923.225i) q^{53} +(-4459.12 + 866.785i) q^{55} +(-240.890 - 240.890i) q^{57} -4549.02i q^{59} +631.912 q^{61} +(-2699.65 + 2699.65i) q^{63} +(-497.191 + 737.123i) q^{65} +(2687.74 + 2687.74i) q^{67} +1947.33i q^{69} -4543.02 q^{71} +(5853.14 - 5853.14i) q^{73} +(1036.06 - 2440.87i) q^{75} +(7786.29 + 7786.29i) q^{77} +9423.38i q^{79} -2511.00 q^{81} +(8391.13 - 8391.13i) q^{83} +(-4701.68 - 3171.29i) q^{85} +(4123.55 + 4123.55i) q^{87} +8365.60i q^{89} +2155.30 q^{91} +(454.451 - 454.451i) q^{93} +(383.042 + 1970.53i) q^{95} +(1014.34 + 1014.34i) q^{97} +11447.3i q^{99} +O(q^{100})\)
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q + 12 q^{3} - 12 q^{5} - 44 q^{7} + 296 q^{11} + 316 q^{13} - 108 q^{15} - 220 q^{17} - 264 q^{21} - 652 q^{23} + 1284 q^{25} + 1728 q^{27} + 2760 q^{31} + 888 q^{33} - 7092 q^{35} - 2052 q^{37} - 4312 q^{41}+ \cdots + 11812 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/80\mathbb{Z}\right)^\times\).

\(n\) \(17\) \(21\) \(31\)
\(\chi(n)\) \(e\left(\frac{1}{4}\right)\) \(1\) \(1\)

Coefficient data

For each \(n\) we display the coefficients of the \(q\)-expansion \(a_n\), the Satake parameters \(\alpha_p\), and the Satake angles \(\theta_p = \textrm{Arg}(\alpha_p)\). You can download additional coefficients here.



Currently showing only \(a_p\); display all \(a_n\) Currently showing all \(a_n\); display only \(a_p\)
Significant digits:
\(n\) \(a_n\) \(a_n / n^{(k-1)/2}\) \( \alpha_n \) \( \theta_n \)
\(p\) \(a_p\) \(a_p / p^{(k-1)/2}\) \( \alpha_p\) \( \theta_p \)
\(2\) 0 0
\(3\) 3.00000 − 3.00000i 0.333333 − 0.333333i −0.520518 − 0.853851i \(-0.674261\pi\)
0.853851 + 0.520518i \(0.174261\pi\)
\(4\) 0 0
\(5\) −24.5407 + 4.77033i −0.981626 + 0.190813i
\(6\) 0 0
\(7\) 42.8516 + 42.8516i 0.874523 + 0.874523i 0.992961 − 0.118438i \(-0.0377887\pi\)
−0.118438 + 0.992961i \(0.537789\pi\)
\(8\) 0 0
\(9\) 63.0000i 0.777778i
\(10\) 0 0
\(11\) 181.703 1.50168 0.750840 − 0.660484i \(-0.229649\pi\)
0.750840 + 0.660484i \(0.229649\pi\)
\(12\) 0 0
\(13\) 25.1484 − 25.1484i 0.148807 − 0.148807i −0.628778 − 0.777585i \(-0.716445\pi\)
0.777585 + 0.628778i \(0.216445\pi\)
\(14\) 0 0
\(15\) −59.3110 + 87.9330i −0.263604 + 0.390813i
\(16\) 0 0
\(17\) 160.407 + 160.407i 0.555040 + 0.555040i 0.927891 − 0.372851i \(-0.121620\pi\)
−0.372851 + 0.927891i \(0.621620\pi\)
\(18\) 0 0
\(19\) − 80.2967i − 0.222429i −0.993796 − 0.111214i \(-0.964526\pi\)
0.993796 − 0.111214i \(-0.0354740\pi\)
\(20\) 0 0
\(21\) 257.110 0.583016
\(22\) 0 0
\(23\) −324.555 + 324.555i −0.613525 + 0.613525i −0.943863 − 0.330337i \(-0.892837\pi\)
0.330337 + 0.943863i \(0.392837\pi\)
\(24\) 0 0
\(25\) 579.488 − 234.134i 0.927181 − 0.374615i
\(26\) 0 0
\(27\) 432.000 + 432.000i 0.592593 + 0.592593i
\(28\) 0 0
\(29\) 1374.52i 1.63438i 0.576366 + 0.817192i \(0.304470\pi\)
−0.576366 + 0.817192i \(0.695530\pi\)
\(30\) 0 0
\(31\) 151.484 0.157631 0.0788156 − 0.996889i \(-0.474886\pi\)
0.0788156 + 0.996889i \(0.474886\pi\)
\(32\) 0 0
\(33\) 545.110 − 545.110i 0.500560 − 0.500560i
\(34\) 0 0
\(35\) −1256.02 − 847.191i −1.02533 − 0.691585i
\(36\) 0 0
\(37\) −1428.48 − 1428.48i −1.04345 − 1.04345i −0.999012 − 0.0444340i \(-0.985852\pi\)
−0.0444340 − 0.999012i \(-0.514148\pi\)
\(38\) 0 0
\(39\) − 150.890i − 0.0992045i
\(40\) 0 0
\(41\) −3016.66 −1.79456 −0.897281 − 0.441459i \(-0.854461\pi\)
−0.897281 + 0.441459i \(0.854461\pi\)
\(42\) 0 0
\(43\) 1615.74 − 1615.74i 0.873843 − 0.873843i −0.119046 − 0.992889i \(-0.537983\pi\)
0.992889 + 0.119046i \(0.0379834\pi\)
\(44\) 0 0
\(45\) −300.531 − 1546.06i −0.148410 − 0.763487i
\(46\) 0 0
\(47\) 397.522 + 397.522i 0.179956 + 0.179956i 0.791336 − 0.611381i \(-0.209386\pi\)
−0.611381 + 0.791336i \(0.709386\pi\)
\(48\) 0 0
\(49\) 1271.53i 0.529582i
\(50\) 0 0
\(51\) 962.440 0.370027
\(52\) 0 0
\(53\) 923.225 − 923.225i 0.328667 − 0.328667i −0.523413 − 0.852079i \(-0.675341\pi\)
0.852079 + 0.523413i \(0.175341\pi\)
\(54\) 0 0
\(55\) −4459.12 + 866.785i −1.47409 + 0.286540i
\(56\) 0 0
\(57\) −240.890 − 240.890i −0.0741428 − 0.0741428i
\(58\) 0 0
\(59\) − 4549.02i − 1.30681i −0.757006 − 0.653407i \(-0.773339\pi\)
0.757006 − 0.653407i \(-0.226661\pi\)
\(60\) 0 0
\(61\) 631.912 0.169823 0.0849116 − 0.996388i \(-0.472939\pi\)
0.0849116 + 0.996388i \(0.472939\pi\)
\(62\) 0 0
\(63\) −2699.65 + 2699.65i −0.680185 + 0.680185i
\(64\) 0 0
\(65\) −497.191 + 737.123i −0.117678 + 0.174467i
\(66\) 0 0
\(67\) 2687.74 + 2687.74i 0.598738 + 0.598738i 0.939977 − 0.341238i \(-0.110846\pi\)
−0.341238 + 0.939977i \(0.610846\pi\)
\(68\) 0 0
\(69\) 1947.33i 0.409017i
\(70\) 0 0
\(71\) −4543.02 −0.901214 −0.450607 − 0.892722i \(-0.648792\pi\)
−0.450607 + 0.892722i \(0.648792\pi\)
\(72\) 0 0
\(73\) 5853.14 − 5853.14i 1.09836 − 1.09836i 0.103754 − 0.994603i \(-0.466915\pi\)
0.994603 − 0.103754i \(-0.0330854\pi\)
\(74\) 0 0
\(75\) 1036.06 − 2440.87i 0.184189 − 0.433932i
\(76\) 0 0
\(77\) 7786.29 + 7786.29i 1.31325 + 1.31325i
\(78\) 0 0
\(79\) 9423.38i 1.50992i 0.655773 + 0.754958i \(0.272343\pi\)
−0.655773 + 0.754958i \(0.727657\pi\)
\(80\) 0 0
\(81\) −2511.00 −0.382716
\(82\) 0 0
\(83\) 8391.13 − 8391.13i 1.21805 − 1.21805i 0.249733 − 0.968315i \(-0.419657\pi\)
0.968315 − 0.249733i \(-0.0803429\pi\)
\(84\) 0 0
\(85\) −4701.68 − 3171.29i −0.650751 − 0.438933i
\(86\) 0 0
\(87\) 4123.55 + 4123.55i 0.544794 + 0.544794i
\(88\) 0 0
\(89\) 8365.60i 1.05613i 0.849204 + 0.528065i \(0.177082\pi\)
−0.849204 + 0.528065i \(0.822918\pi\)
\(90\) 0 0
\(91\) 2155.30 0.260270
\(92\) 0 0
\(93\) 454.451 − 454.451i 0.0525437 − 0.0525437i
\(94\) 0 0
\(95\) 383.042 + 1970.53i 0.0424423 + 0.218342i
\(96\) 0 0
\(97\) 1014.34 + 1014.34i 0.107805 + 0.107805i 0.758952 − 0.651147i \(-0.225712\pi\)
−0.651147 + 0.758952i \(0.725712\pi\)
\(98\) 0 0
\(99\) 11447.3i 1.16797i
Currently showing only \(a_p\); display all \(a_n\) Currently showing all \(a_n\); display only \(a_p\)

Twists

       By twisting character
Char Parity Ord Type Twist Min Dim
1.1 even 1 trivial 80.5.p.f.17.1 4
4.3 odd 2 40.5.l.b.17.1 ✓ 4
5.2 odd 4 400.5.p.g.193.1 4
5.3 odd 4 inner 80.5.p.f.33.1 4
5.4 even 2 400.5.p.g.257.1 4
8.3 odd 2 320.5.p.n.257.2 4
8.5 even 2 320.5.p.k.257.2 4
12.11 even 2 360.5.v.b.217.2 4
20.3 even 4 40.5.l.b.33.1 yes 4
20.7 even 4 200.5.l.c.193.2 4
20.19 odd 2 200.5.l.c.57.2 4
40.3 even 4 320.5.p.n.193.2 4
40.13 odd 4 320.5.p.k.193.2 4
60.23 odd 4 360.5.v.b.73.2 4
    
        By twisted newform
Twist Min Dim Char Parity Ord Type
40.5.l.b.17.1 ✓ 4 4.3 odd 2
40.5.l.b.33.1 yes 4 20.3 even 4
80.5.p.f.17.1 4 1.1 even 1 trivial
80.5.p.f.33.1 4 5.3 odd 4 inner
200.5.l.c.57.2 4 20.19 odd 2
200.5.l.c.193.2 4 20.7 even 4
320.5.p.k.193.2 4 40.13 odd 4
320.5.p.k.257.2 4 8.5 even 2
320.5.p.n.193.2 4 40.3 even 4
320.5.p.n.257.2 4 8.3 odd 2
360.5.v.b.73.2 4 60.23 odd 4
360.5.v.b.217.2 4 12.11 even 2
400.5.p.g.193.1 4 5.2 odd 4
400.5.p.g.257.1 4 5.4 even 2